Pipe Attenuation Solutions for Section 104 Adoption

Water Management Solutions

Uniclass L7312:P71 CI/SfB

(52.5) In6

January 2014

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Developers in England and Wales are facing many changes to the way in which both surface water and foul sewers are designed, constructed and adopted over the next few years.

Residential attenuation and Section 104 adoption:

In return, the act mandates that Water and Sewage

Companies have to adopt sewers serving more than

one property that meet those standards and sets

out how this should be achieved.

The following pages explain what is expected of

developers under the proposed changes and the

assistance available from Polypipe in planning and

installing attenuation and large diameter pipe

systems that accommodate them.

The implementation of Section 42 of the Floods and Water Management Act 2010

limits the existing rights of a developer to connect to a public sewer system and

establishes new requirements for the construction and adoption of sewers.

More specifically, the act contains a provision for Government to introduce new

build standards for sewers and sustainable urban drainage systems (SUDS).

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Contents

Sewer Design 4 - 5

Polypipe Residential Sewer Solutions 6 - 7

Ridgistorm-XL 8 - 9

Case Studies 10 - 11

Service, Support & Technical Literature 12 - 13

Polypipe Overview & Sustainable

Building Technology14 - 15

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In the future a Section 104 agreement on attenuation systems and sewers intended for adoption must be in place before building can begin.

How changes to the Section 104 process could affect your project

The new rules have been in place in Wales since

1st October 2012 and are expected to come into force

in England sometime in 2013/2014. As a result, the S104

approval process, if not done correctly, has the potential

to extend the project timescale.

Involving us early will help save time and moneyDetailed planning and design is crucial for the successful adoption of your attenuation and sewerage system.

Speak to us at the earliest design stage and we can look at suitable systems and suggest ways to add value

based on our clear understanding of water company requirements for dependable, low maintenance assets

that are more likely to satisfy the approval processes.

This will be a legal requirement that

needs Developers to submit a full set

of plans for approval, meeting the

Government’s National Build Standards

and Water Company criteria.

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How changes to the Section 104 process could affect your project

• By assisting with your initial system designs

Our experts can work with you to make

sure your system is optimised for

performance and cost while meeting both

current and forthcoming Build Standards.

As well as bringing their expertise and

experience in dealing with Water Company

approval processes to bear, they are also

able to provide supporting structural

calculations, CAD drawings and standard

details for your project.

• By speeding up installation

Plastic pipe systems are easier to handle

because they are up to 94% lighter in

weight than the concrete equivalent.

This reduces the need for heavy lifting

equipment on site and speeds up the rate

at which pipes and pre-fabricated chambers

can be laid and joined together.

• By creating culverts more quickly Pre-fabricated off-site and delivered when

required, our engineered plastic solutions

are easier to handle and much quicker to

install than traditional systems. A concrete

box culvert can take weeks to install,

whereas our pre-fabricated plastic

alternative can be in place within days.

• By providing Water Company accepted products Water Companies are increasingly accepting

plastic systems for attenuation and sewerage

solutions, allowing developers to take

advantage of the inherent speed, adaptability

and savings they offer while also meeting

expected performance requirements.

• By supporting you on-site

We can provide comprehensive assistance

during your system installation. This

ranges from technical advice on installation,

to order call-off and scheduling services

that offer ‘just in time’ delivery to reduce

the safety and security risks involved in

storing large numbers of system

components on-site.

Our input throughout the project, but particularly at

the early stages, can help contribute to time and cost

savings in a number of key ways:

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Polypipe offers a wide range of products, services and bespoke solutions to help you reduce costs, speed up installation and bring your housing development onto the market sooner.

Saving time, materials and money in re sidential attenuation & sewerage

Why plastic systems?Concrete and clay drainage systems have traditionally been specified in residential developments, largely

because adopting Water Companies are familiar with their performance characteristics. Water Companies

are now increasingly accepting plastic piping systems for sewerage and attenuation systems, due to the

performance of engineered plastic solutions such as our Ridgistorm-XL. Engineered plastic systems offer

a strong, flexible alternative to concrete and clay that satisfies the requirements of Water Companies

while saving Developers and Groundworkers time and money.

Quicker installation saves time and money The complex nature of attenuation structures proves that pre-fabricated solutions, produced under

factory controlled conditions, greatly reduces the time and amount of labour required to install on site.

Our engineered plastic products are typically just 6% of the weight of their concrete equivalents. A metre

of 1800mm diameter plastic pipe is, for example approximately the same weight as a metre of 300mm

diameter concrete pipe. This lighter weight makes them easier to transport and handle on site.

This weight difference is evident when installing larger items such as concrete culverts, which are so heavy

that they cannot be installed without heavy lifting gear leading to longer lead times and added plant hire

and transport costs.

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Saving time, materials and money in re sidential attenuation & sewerage

• System planning and design advice

• General arrangement drawings

• Structural calculations to BS EN 1295-1

• Standard details

• Technical support

• On-site support during installation

Value engineered solutions for performanceAs each pipe system is tailored to exact site conditions, we are able to engineer components to match any

ground conditions and loadings, from pedestrianised and lightly trafficked surfaces to car parking areas and

heavily trafficked roads. This allows us to create solutions that perform to the project requirements without

wasteful over-engineering.

Olympia profile SQ profile

PR profile

Our design and support services Polypipe work closely with both the Developer and Design Consultant to provide:

750mm 900mm 1050mm 1200mm 1500mm 1800mm 2100mm

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Our advanced, large diameter pipe is available in a range of sizes from 750mm to 2100mm, making it ideal for residential attenuation and sewer systems, satisfying Section 104 criteria for adoption.

Ridgistorm-XL

Ridgistorm-XL Large Diameter PipesThe wide choice of engineered pipe wall structures

available within the Ridgistorm-XL range means you

can be confident it offers the performance you need

in any adoptable application. Inherently strong yet

flexible, it sheds applied loads to surrounding backfill,

removing the risk of leaks and ingress.

There are two jointing options available providing

exceptional joint integrity. Our unique electro-fusion

process offers improved health and safety by reducing

the need for jointing teams to work inside the pipe

itself and our rubber seal system uses socket and

spigot jointing with two rubber seals installed into

the spigot end of the pipe fitting. Both jointing

methods are quick and easy to install and do not

require any specialist skills.

Large Diameter ManholesBespoke system designs means man-access chambers

can be incorporated at precisely the right points in your

attenuation and drainage solution. It also means that

because of the flexibility of our in-house fabrications

department, if the precise locations of these items have

not been fully finalised, we can still carry on supplying

you with the main structure and add the other

elements later.

In contrast to concrete manholes and culverts, which

have to be built up and cast in situ, our products are

fabricated off-site and delivered when required.

This not only speeds up installation but provides products

that have been manufactured under carefully controlled

factory conditions ensuring guaranteed quality.

Bespoke FabricationPolypipe’s bespoke fabrications facility offers a unique

service to developers and drainage contractors. It is

here that your bespoke system design is converted

into a robust Water Company accepted attenuation

or sewerage solution.

This ability to create a 100% bespoke system offers

unrivalled flexibility, saving time and money by

eliminating wasteful, over-engineering and on-site

labour costs. This enables us to deliver increased

efficiency through the inherent benefits of off-site

manufacture, prompt on-time delivery, reduced

on-site assembly and quick, easy installation.

Accessories and FittingsWe provide a complete range of customised fittings,

reducers and bends for use with the Ridgistorm-XL

system. The result is added design flexibility and easier

integration with existing sewerage structures.

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Case Studies

Developer benefits from Polypipe’s drainage engineering expertiseA bespoke drainage solution provided

by Polypipe helped the Developer on

a scheme in Castleford achieve a fast

Section 104 approval.

The client required a drainage solution which could

be installed under the main access road of the new

development in Castleford, West Yorkshire, whilst

conforming to the requirements set by Yorkshire

Water and the Specification for Highway Works

(SHW). The original design incorporated a concrete

box culvert which would have required a long lead

time and substantial equipment to install in the

form of a crane and lifting platform.

By turning to Polypipe’s water management

specialists the Developer achieved an easy to install

solution which was a mere 6% of the weight of the

specified concrete culvert, aiding workers on-site

and saving on cost.

The Polypipe solution fitted within the same footprint

as the original specification, incorporating a dual run

of 1200mm large diameter Ridgistorm-XL pipe and

bespoke pre-fabricated manholes, chambers and

fittings, all produced at Polypipe’s state-of-the-art

facility in Loughborough.

Polypipe’s Technical team took the drawings and soil

investigation report with associated loading information

and were able to calculate the exact structural strength

of the pipe required. They worked with the Design

Consultant to undertake hydraulic checks to prove the

integrity of the system.

The work completed on this development showcases

the time, installation and cost savings Developers and

Groundworkers can achieve by working with Polypipe

from early design stage.

Experts at Polypipe helped to create an innovative

attenuation system for a housing development in

the Chartham countryside to help the Developer

meet Section 104 requirements at their Kingfisher

Place site. The Developer required a drainage solution

which controlled water discharge at a rate of 4 litres

per second into an Environment Agency managed

watercourse. Working together from the early design

stage, Polypipe’s water management specialists

were able to utilise their market-leading 1500mm

Ridgistorm-XL large diameter pipe to create

a bespoke 303m3 attenuation tank, complete with

pre-fabricated dry weather flow channel and a

Stormcheck Vortex Flow Control Chamber to collect

and restrict water in a public open space (POS).

Polypipe’s ability to pre-fabricate the Ridgistorm-XL

system off-site allowed for a speedier installation.

The light weight nature of plastic pipes over

traditional materials meant that a smaller 13.5 tonne

excavator could be used, reducing installation costs

and working around the access constraints of the

restricted site. The system also benefitted from

Polypipe’s unique electro-fusion jointing process,

which ensured that the tank could be installed

on-site and removed the need for a potentially

laborious welding process.

With a wide variety of products available and an

expert team providing an in-depth knowledge of

meeting Section 104 requirements, Polypipe was able

to provide a bespoke solution that added real value

to the development.

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Polypipe meets attenuation needs of Kent housing development

A development in Cumbria makes savings with bespoke attenuation systemPolypipe’s water management specialists were called

upon to design a bespoke underground attenuation

solution which met the exact needs of a development

in Penrith, Cumbria.

The system was quickly adopted by United Utilities

as a Section 104 agreement. Polypipe offered a value

engineered attenuation tank for the project, designed

within a Public Open Space to create a storage capacity

of 95m3. The multi-leg attenuation tank was created

from Polypipe’s 1200mm Ridgistorm-XL large diameter

pipe system, incorporating a range of pre-fabricated

fittings including a 1500mm diameter off-set chamber

and a 1500mm diameter Stormcheck Vortex Flow

Control Chamber set to the site’s required discharge rate.

The Ridgistorm-XL system was installed using Polypipe’s

unique electro-fusion welding process. Whilst the original

specification required the manufacturer to join the pipes

once installed, Polypipe’s electro-fusion jointing method

negated this need and the Groundworker’s on-site team

were able to carry out the welding process themselves,

speeding up the installation and reducing the work that

needed to be undertaken within the confined space.

Polypipe’s experts were able to design-out several

separate concrete chambers and incorporate a high-

quality plastic solution into the tank, which was

quicker and easier to install while creating several

cost-saving opportunities.

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Polypipe’s product design and support teams are dedicated to helping Developers with the advice and expertise they need to help deliver Section 104 compliant attenuation and sewer systems.

Polypipe Service and Support. Saving y ou money from the very start

Value EngineeringBy designing and fabricating a SUDS system to the specific requirements of each individual project, we are

able to provide solutions that represent the very best performance and value for money. Precise value

engineering means less waste, optimum efficiency and improved sustainability at every stage of the process.

DesignPolypipe provides a full in-house design facility.

Our designers, engineers and drainage specialists

provide guidance on the most appropriate, value

engineered solution for your Section 104 compliant

attenuation or soakaway project, which will be

manufactured by our fabrications team and

delivered to your site, ready for installation.

UKAS accredited laboratoriesThe in-house Polypipe Research and Development facility

is one of the best of its kind and includes the independent

UKAS accredited Berry & Hayward laboratory. That gives

us the body of knowledge and expertise needed to

produce the most advanced range of water management

solutions available to the construction industry.

Product Literature

Polypipe Service and Support. Saving y ou money from the very start

PlanningChanging legislation and ever more demanding planning processes all add to the workload for Developers

seeking approval for their projects. Our planning teams have the technical and regulatory knowledge to

help you meet the broad range of demands needed for project approval and will advise you at every stage

on satisfying their requirements.

Technical and installation supportRight from your initial design consultation, your project couldn’t be in safer or more experienced hands.

Our full project co-ordination service will help you manage and prioritise your resources and your dedicated

Project Co-ordinator will oversee the delivery of components and services in line with your project timescales.

At any stage you can call our technical helpline for a rapid response to all your enquiries on:

+44 (0)1509 615100

www.polypipe.com/wms

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Market Sector LiteratureAdditional market sector literature is

available please visit www.polypipe.com.

Literature

Water Management Solutions Product

Selector

Polypipe Civils Product Selector

All literature available at: www.polypipe.com/wms

WMS Sector Brochure

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PolypipeWe design, develop and manufacture the widest range of plastic piping products, with over 20,000 product lines available. Our primary focus is on developing and supporting pragmatic product systems through specific knowledge and understanding of the residential, commercial, civils and infrastructure market sectors. We ensure that customers can trust our unrivalled expertise to provide value engineered, fit for purpose piping solutions for the growing diversity and complexity of construction and building technology challenges they face.

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PRODUCT INNOVATION

Embracing leading materials and technical innovation to create the products, processes and techniques of tomorrow.

SUSTAINABLE PRODUCTS & PRACTICES

100% recyclable plastic products made from recycled raw materials wherever possible. Fabricated and transported to the same strict sustainability agenda.

ENABLING SUSTAINABLE BUILDING TECHNOLOGY

Polypipe is committed to plastic piping systems that support and encourage

low and zero carbon construction technology and the management of

water as a precious resource.

POLYPIPE BRAND

The Polypipe name and its associated brands are bywords for service and reliability among specifiers, contractors, trades and domestic users alike.

BREADTH AND DEPTH OF PRODUCT SYSTEMS

Delivering the ideal plastic piping solution across the whole spectrum of construction projects and market sectors. Always tried, tested and cost-effective.

VALUE ENGINEERED SOLUTIONS

Using technology to deliver whole-life value by providing systems that are

engineered to perform.

INDUSTRY AUTHORITY

Our product portfolio is supported by up to the minute knowledge and advice on legislation and regulations affecting the application of Polypipe products.

MANUFACTURING SCALE

Across the UK, Ireland, Europe and the Middle

East, there are 17 Polypipe facilities servicing the needs of the construction industry.

MARKET LEADERSHIP

Across every key market, Polypipe products define and drive quality in plastic pipe manufacture and performance.

CHALLENGING TRADITION

Thinner, lighter and stronger than clay or concrete, ‘less is more’- and far less appealing to thieves than copper. Polypipe plastic pipes continue to revolutionise the industry.

LEADING EDGE EXPERTISE

Polypipe’s R&D programme is led by some of the industry’s most knowledgeable and experienced teams who have a record of developing systems engineered with integrity to meet the needs of an exacting client base.

TECHNICAL SUPPORT

Our highly knowledgeable technical teams included fully qualified engineers who provide detailed design guidance right through to installation and maintenance advice.

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WATER MANAGEMENT SOLUTIONS‘ROOF TO RIVER’

Offering a comprehensive range of standalone and

modular SUDS products, rainwater harvesting and surface

water treatment solutions plus legislative and technical

support services, Polypipe’s water management solutions

team address the surface water requirements of every

construction and civil engineering project.

CARBON EFFICIENT SOLUTIONS‘SUSTAINABLE INDOOR ENVIRONMENTS’

Ever stricter building regulations and ever more

environmentally conscious customers are driving the

demand for greener building products and technologies.

Polypipe fulfils that demand with a full range of systems

that enable collection, transmission, emission and control

in heating, ventilation and cooling systems.

Polypipe enabling sustainable building technologyPolypipe provides plastic piping systems that enable the effective installation and

performance of sustainable building technology, meeting the twin global challenges

of carbon reduction and water management.

CIVILS AND INFRASTRUCTURE Delivering performance and

sustainability, Polypipe’s surface water

drainage and cable management

systems, supported by our in-house

fabrications team, offer civils and

infrastructure project planners a

complete suite of solutions.

COMMERCIAL

Major commercial projects from car

parks and high rise office blocks

to hospitals, educational premises

and shopping centres have all

benefited from Polypipe’s range

of value engineered products and

comprehensive service support.

RESIDENTIAL

Polypipe offers the broadest range of

residential product and service solutions

for both new build and RMI applications,

as well as innovative solutions in response

to legislative and industry targets for

more sustainable housing.

All descriptions and illustrations in this publication are intended for guidance only and shall not constitute a ‘sale by description’. All dimensions given are nominal and Polypipe may modify and change the information, products and specifications from time to time for a variety of reasons, without prior notice. The information in this Brochure is provided ‘as is’ on June 2013. Updates will not be issued automatically. This information is not intended to have any legal effect, whether by way of advice, representation or warranty (express or implied). We accept no liability whatsoever (to the extent permitted by law) if you place any reliance on this publication you must do so at your own risk. All rights reserved. Copyright in this publication belongs to Polypipe and all such copyright may not be used, sold, copied or reproduced in whole or part in any manner in any media to any person without prior consent. is a registered trademark of Polypipe. All Polypipe products are protected by Design Right under CDPA 1988. Copyright © 2013 Polypipe. All rights reserved.

Sector FocusOur product systems respond directly to sector-specific requirements thanks to focused

technical and development teams with hands on expertise in the following areas.

www.polypipe.com

Polypipe Civils Fax: +44 (0) 1509 610215

Email: wmsenquiries@polypipe.com

www.polypipe.com/wms

Water Management SolutionsPipe Attenuation Solutions for

Section 104 Adoption

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